/*

� 最佳准确率窗口:
{
  windowSize: 21,
  total: 1244,
  correct: 849,
  accuracy: 68.25,
  maxWrongStreak: 6
}

�️ 最小连续错误窗口:
{
  windowSize: 4,
  total: 1244,
  correct: 811,
  accuracy: 65.19,
  maxWrongStreak: 5
}

*/
// 📦 引入工具库
const _ = require("lodash");
const path = require("path");
const fs = require("fs");

// 📦 ESM 支持模块加载
const esm = require("esm");
const requireModule = esm(module);

// 📦 项目依赖模块
const { readAllValues } = requireModule(
  "../../../awakened-potential/helpers/readAllValues.js"
);
const checkAccuracy = requireModule("../../utils/checkAccuracy.js");

// ✅ 读取历史开奖数据（模拟全部）
const allValues = readAllValues("m");

// ✅ 号码池（01 ~ 49）
const allNumbers = Array.from({ length: 49 }, (_, i) =>
  (i + 1).toString().padStart(2, "0")
);

/**
 * 数字累加和策略函数
 */
const select32ByAccumulatedWeight = (temp) => {
  const countMap = {};

  temp.forEach((item) => {
    const n = item.number;
    countMap[n] = (countMap[n] || 0) + 1;
  });

  const scored = allNumbers.map((num) => {
    const count = countMap[num] || 0;
    return {
      number: num,
      score: parseInt(num, 10) * count,
    };
  });

  const top32 = _.orderBy(scored, ["score", "number"], ["desc", "asc"])
    .slice(0, 32)
    .map((item) => item.number);

  if (top32.length !== 32) {
    throw new Error(`❗ 无法生成 32 个不重复号码（目前只有 ${top32.length} 个）`);
  }

  return top32;
};

// ✅ 记录所有窗口测试结果
const testResults = [];

for (let windowSize = 2; windowSize <= 200; windowSize++) {
  let correct = 0;
  let maxWrongStreak = 0;
  let currentWrongStreak = 0;
  const predictResults = [];

  allValues.forEach((item, index) => {
    const temp = allValues.slice(Math.max(0, index - windowSize), index);
    if (temp.length === 0) return;

    const selectedNumbers = select32ByAccumulatedWeight(temp);

    if (selectedNumbers.length !== 32) {
      throw new Error("选出的32个号码数量不正确");
    }

    const isHit = checkAccuracy(selectedNumbers, item.number);
    if (isHit) {
      correct++;
      currentWrongStreak = 0;
    } else {
      currentWrongStreak++;
      maxWrongStreak = Math.max(maxWrongStreak, currentWrongStreak);
    }

    predictResults.push(selectedNumbers);
  });

  const total = predictResults.length;
  const accuracy = total > 0 ? ((correct / total) * 100).toFixed(2) : 0;

  testResults.push({
    windowSize,
    total,
    correct,
    accuracy: Number(accuracy),
    maxWrongStreak,
  });
}

// ✅ 输出所有窗口结果
// testResults.forEach((res) => {
//   console.log(
//     `windowSize = ${res.windowSize}, 准确率 = ${res.accuracy}%, 最大连续错误次数 = ${res.maxWrongStreak}`
//   );
// });

// ✅ 输出最佳结果
const bestAcc = _.maxBy(testResults, "accuracy");
const bestStable = _.minBy(testResults, "maxWrongStreak");

console.log("\n🎯 最佳准确率窗口:");
console.log(bestAcc);

console.log("\n🛡️ 最小连续错误窗口:");
console.log(bestStable);
